Dess | Tech Support Engineer, Sr.

The paging panel must be updated after changing the RowCount. I have logged it in our feedback portal and I have added a vote for it on your behalf. You can track its progress, subscribe for status changes and add your comments on the following link - feedback item.

Olya

I'm trying to use RadVirtualGrid.TableElement.SynchronizeRows method asynchronocally to force CellValueNeeded, but it falls with "Collection was modified" exception.

The whole thing i'm rying to do is this: I'm trying to organize a column with images. I fill it with predefined icons at first and start an async image processing(generating thumbnail), after it is finished i want to fire CellFormating event to change cell image to the generated thumbnail.

What way of solving my problem can you recommend me?

Olga

Dess | Tech Support Engineer, Sr.

I would recommend you to use a BackgroundWorker for loading the images. Thus, in the RunWorkerCompleted event, you can call the SynchronizeRows method to force refreshing the grid. Additional information how to use a BackgroundWorker is available here: https://msdn.microsoft.com/en-us/library/cc221403(v=vs.95).aspx

I hope this information helps. Should you have further questions I would be glad to help.

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